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<body>
    <div class="card">
        <h1 class="text-4xl font-bold text-center mb-12 text-gray-800">数据授权管理系统</h1>
        <div class="grid grid-cols-1 md:grid-cols-3 gap-8">
            <a href="/Mydata/" class="menu-item group">
                <div class="flex flex-col items-center p-8 rounded-2xl bg-white shadow-lg hover:shadow-xl transition-all duration-300">
                    <i class="fas fa-shield-alt icon group-hover:scale-110 transition-transform duration-300"></i>
                    <h2 class="text-2xl font-semibold text-gray-800 mb-2">数据认证</h2>
                    <p class="text-gray-600 text-center">管理您的数据所有权和认证信息</p>
                </div>
            </a>
            <a href="/authorization_page/" class="menu-item group">
                <div class="flex flex-col items-center p-8 rounded-2xl bg-white shadow-lg hover:shadow-xl transition-all duration-300">
                    <i class="fas fa-key icon group-hover:scale-110 transition-transform duration-300"></i>
                    <h2 class="text-2xl font-semibold text-gray-800 mb-2">动态授权</h2>
                    <p class="text-gray-600 text-center">创建和管理动态授权令牌</p>
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            </a>
            <a href="https://l33pkczt-8000.inc1.devtunnels.ms/" class="menu-item group">
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                    <i class="fas fa-cogs icon group-hover:scale-110 transition-transform duration-300"></i>
                    <h2 class="text-2xl font-semibold text-gray-800 mb-2">机制测试</h2>
                    <p class="text-gray-600 text-center">进行交易链完整性测试和防篡改测试</p>
                </div>
            </a>
        </div>
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